Drape clamp holder



FIG. 1 is a side view of a drape clamp holder, showing my new design;

FIG. 2 is a top view;

FIG. 3 is a left-end view; and

FIG. 4 is a right-end view thereof.

The pole shown in phantom line in FIG. 1 is for illustrative purposes only and forms no part of my new design. 

The ornamental design for a drape clamp holder, as shown and described. 